Here is my latest invention for self mobilization of the hips, low and mid back, I call it the tripod. It can very effectively treat constriction and tightness in the fascia and muscle and mobilize the difficult sacroiliac, lumbar and thoracic spine. Often this is all that is needed to release the tightness and pain felt in these areas. It is very simple to make. Use a 3 way connector for 1/2 inch PVC and cut 3 legs of the 1/2 inch PVC. This makes a small tripod that is excellent for rolling up on to treat the very specific points necessary for effective mobilization. Yes it can be painful to treat these points and do not overwork them. Call my office for any questions. Do not use for complicated conditions or acute trauma.